American slang for stealing or pocketing an item, often of dubious or minor value. Archaic , dates from the 1950s-1960s, especially popular on the West Coast in those days.
May have been replaced by "rip off" in the late 1960s, which became a much more broad term and eventually a noun as well as a verb.
"I'm not putting my beer down. One of these biker dudes might cop off with it."
"Where's my hat?"
"That chick you were talking to earlier. I think she copped off with it."
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. Penguin Books,1992. p. 38)